I'm running Ubuntu 12.04 LTS and just waiting for 14.04 I should be able to use my updater to do a distro upgrade or should I just do a reinstall hopefully I can do a upgrade due to I have a lot of documents.
I decided to install Windows in my virtual box because thats where belongs anyways I prefer Linux anyways because it runs so much quicker I use Ubuntu tried others but keep going back to Ubuntu but I use it for everyday things and my banking needs I setup the ufw firewall and fine it seems too work for me hopefully I'm doing it right.

Ubuntu 14.04 is an LTS as is 12.04 so you should be able to update directly from 12.04 to 14.04. I've updated Ubuntu successfully in the past but if you have a lot of data you want to keep, I would definitely make a backup of it before trying the update.

Ubuntu apparently gives you the option to do an LTS to LTS upgrade. I would certainly back up my data before trying that, though. And personally, I would go with a fresh install on a separate partition to be able to dualboot for a while until I am sure that the new install works as needed.

It depends. You should be able to upgrade the system, but upgrading Ubuntu is known to sometimes cause problem, especially if you use third party repositories or PPAs. Read the release notes and upgrade information before doing anything.
In any case is it recommended to always have a backup of your documents, regardless if you plan an upgrade, a fresh install or just keep 12.04. Your hardware can fail at any time or you may be victim of a nasty bug, so not having a backup is just negligent.

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Thanks guys for support and thoughts

The LTS to LTS upgrade should work as well as a regular version to version upgrade. It is, or at least used to be very well tested before the release date.

As TobiSDG has stated any packages not in the Ubuntu regular repos for 12.04 will cause problems. Your package manager has no way to deal with them.

If you have packages from ppa's you should have the package ppa-purge installed. Running that should remove all ppa's and the packages from them replacing them, if needed, with packages from the repos.

Back up your data.

Don't do the version upgrade right away. There will still be bugs that were not discovered in testing at release time. There always is in all OS's. Some may have to do with the upgrade process. On that note, make sure your 12.04 is fully up to date right before you try the upgrade.

Back up your data.

I would actually recommend waiting to upgrade until sometime in July. Seriously. That is when the first "step" release for 14.04 comes out making it 14.04.1. Anyone downloading the ISO will get the full system including all package upgrades that were done since the release date. There are only 4 step releases made in the LTS life. The vast majority of package upgrades will take place before that first one. The thing will be, or should be, much more stable at that time. 12.04 is 2 years old. Another 3 months will not hurt you and could save some serious problems.

Back up your data.

If you have install ANY 3rd party packages I would seriously consider a clean install.

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I have often wondered whether there were incremental fixes were being made as a result of bugs being discovered.

The implication here is that the initial release will not be (incrementally) corrected for bugs until a "step" release is issued. Are those assumptions correct?

No, you will get bugfixes right from day one.

Bug fixes go on all the time. The thing is that when you download an image to install on release day it is the same image you will download the day before the first step release image is released.

This means that while if you install, say, a month after the release of the new version you will have a LOT of packages to upgrade right after you boot up the first time. This only gets worse up to that first step release (14.04.1) where all of the package upgrades, to that point are included in that new release.

Most of the really critical bugs in a new release will be fixed in the first month or month and a half.

But what does this mean for someone running an older version that has been working fine for a couple of years? It means that if you install on release day you have a buggy system to replace your old system.

This is not what people run an LTS for. People that run an LTS release want a system that they can use for a couple or more years without having a lot of problems.

Waiting a whole 3 months will give you a better experience from that point of view.

People are different. My wife and I both run Linux. Started with Ubuntu 8.04 which was a LTS. At that time we had one box. 8.04 was on there until it reached its EOL. My wife used it. I didn't. I had another install on the drive and it was changed with every regular release and I started running 9.10-testing a week after the release of 9.04.

I was constantly doing package upgrades and working on little niggling problems that just did not occur on 8.04. I found it to be FUN and 8.04 to be boring. The wife finds little niggling problems that constantly pop up simply iritating.

She now runs Debian Wheezy on her laptop and I prefer Debian testing and Sid on my box.

Her Sys76 laptop came with Ubuntu 9.10 installed on it. I waited for the first step release of 10.04 before doing a version upgrade on there. Nice clean upgrade and very little need to run update/upgrade cycles which I run once a day, at least, on my installs.

LTS is for people that want to not have a high maintainence OS. That is exactly what it is produced for. But for the first little bit after release you actually can expect a lot of package upgrades. This is the way it is. For the best results just wait. Been 2 years now. July is very close.

Not running Ubuntu anymore I have no idea what day that first step release is set for. It is scheduled right now and the date is available from Ubuntu as to when it will be. A search for 14.04.1 release date should find it.

There are, or were with the 3 year support model, a total of 4 set releases. All of those release dates is available to you right now. There should be more steps for the 5 year support model LTS if they intend to support the upgrading of 14.04 to 18.04.

The last step is released already for 12.04 and that includes some code and package mods that enable that 12.04 to 14.04 possible. Besides needing that 14.04 will be supported for 5 years meaning security upgrades are going to pile up for it after the 14.04.4 step which will be in 2016 before the 16.04 LTS is released. Seems they will need some steps after that for 14.04 just to make it so people don't have huge package upgrades to do when installing 14.04 in 2017, one would do it in 2017 and then one in 2018 to make the Huge jump possible if they intend to try that at all.

It boils down to the fact that you are moving to 14.04 which will be supported until 2019. There may be as many package upgrades in time between release and 14.04.1 as there is from 14.04.1 and the 14.04 EOL.

Just relax. Let the bug folks do their work and then install with the new 14.04.1 release in July that will include all those fixes.

Folks that will be upgrading to 14.10 on its release date are not looking for long term service. They are looking, like me, for the new shiny.

People looking to run 14.04 LTS as their OS for longer than that should just wait for the dust to settle a bit. They are patient folks and can do this. They are still running 12.04 and I admire that.

Bores me to death but has its very, very good advantages. This is why I actually still have Squeeze and Wheezy installed on my box. If I screw up testing and Sid I have very boring, very reliable installs that I can fall back on.

The wife will be using Wheezy until it is close to its EOL when Jessie is a year old. Both ways work. If you want stable wait for the new shiny to not be quite as shiny but a bit dull and reliable.