A trial version of software means that it is not free. You can use it for a time, but after a while they will ask you to pay to upgrade to the full version.
The same thing happens with shareware software.
To turn a trail version into a full version, you must pay a fee to the owner of the software. The owner will email you a license key which will allow you to either download the full version, or to open the trial version into the full version.
Through research, the oldest version founds was the 2006 version. This may mean that this is the oldest version available, and there were software releases prior to this version.
When you are talking about software, it is the latest, newest, and usually best version of the software available
A beta version of software is the final testing phase before the actual full version of the software is released.
If you mean an emulator the related link has the latest version of the PCSX2
The current version of the Direct Admin software is version 1.433. One can find out more information about this software at the online site "Directadmin".
The current version of the Peer-to-Peer software entitled "eMule Adunanza" is 3.18. This version of the software was released during January 2013.
Full packaged software.
Trail version
You Need to register yourself and pay for it if necessary
Version control software will allow you to track changes to your files over time. This ideal for working on software projects when you might need to revert back to a previous version.
8.3 would mean that the software is the 3rd revision of the 8th version of that particular piece of software. When you see names like "8.3.5", that typically means that they have revised a revision.