[eluser]jonez[/eluser]
[quote author="noideawhattotypehere" date="1386686326"]Move on for Laravel/Symfony or something that is being popular and maintained. No offence, i love CI but there is no point investing your time anymore into it.[/quote]
You could use Laravel, which as I understand has required a rewrite *every* version change (gee that sounds fun, wait wasn't the point to have updated code?) or you could stick with CI. Version 3 is basically backwards compatible as was every previous version.
If you researched all the options and determined CI was a good fit for your requirements download CI3 from Github. It's stable and has a lot of new features over 2.1.4.