3.56 is a crappy situation!
No playing of backups (legal or otherwise), no online access and no ability to downgrade.
Really depends on what you want to do.
Do you want to play single player campaign style games, run all kinds of good software and backup your original disc (or rented games, downloads......whatever) or do you want to play online with the games you own (or rent) and stick with what Sony allows to be put on your PS3.
If you are talking about buying a new one and not selling your old one.........you would have the best of both worlds.
If I were in the situation that I wanted the ability for both, I would simply go buy another one and bump it to 3.60 OFW (keeping my existing one on 3.55 CFW).
If you are financially unable to do that then you have to figure out which is more important to you. Online or backups.
As far as a solution coming out soon.
It could be tomorrow. It could be next week. It could be next year.
I would treat the situation as if it was NEVER going to happen and make a decision based on that.
If you do buy a second one, make sure it is on 3.55 or lower (if bought new, you should be able to use the model number to determine if your chances of older firmware are good). After the firmware is confirmed and it is a good, functioning machine, then bump your old one to 3.60 and wait for Sony to fix the F-up with PSN.
I would much rather go to my grave not needing my gun, than go there wishing I had it.