Just wondering how many iOS developers have made the leap to 5.x, and how many are sticking with 4.6.x for now - and maybe why you chose to upgrade, or not upgrade?..
I’d suggest to go with 5.x (though the 5.2 has many problems I would say, regarding all the topics).
5.x has some benefits to 4.x like:
- a much better integration of 3rd party plugins (that was not only a pain in 4.6, but caused several breaking build pipelines and days of investigation).
- much improved assetbundle creation. That was not easy in 4.x, 5.x made that really simple.
- Support for 4.x will cease end of the year (afaik).
So, if you’re starting a new project, I would recommend to go wit 5.x.