every PS3 player that I know that has a PS4 and played beta this weekend cant bear to play on the PS3 now that beta is over. Many have said they will just take the week off (but maybe set coil times) and wait for early access for PS4 this weekend. Many PC players who have PS3 and used PS4 conversion or just tried PS4 beta are also playing but cant wait till PS4 is out for good.

PS3 does not stop you from doing anything, but it does make things more difficult than it should be. PS3 players need to play at a higher level to be competitive in some places (coil4, titan, levi, ...) and a slightly below average player on the PS3 can be a hinderance in some of these fights (they dont have the player skills to make up for the shortcomming of the system, or make the needed adjustments to compensate for the poor system). These same ppl playing on PS4 would still be average or below average, but you will see a large improvement in their skills (saw some friends who use PS3 on PS4 this weekend magically start dodging things they always failed to).

It will not be 2.3, but I would suspect 3.0 will be the last ps3 supported content. I'd like to say it would be sooner, but they are already developing 3.0 with PS3 in mind so I do not see them dropping it from current development that is already underway.