Lightroom 4.1RC question
I installed LR4 and imported my catalog without any issues. My Nik filters and edit features worked fine. I then installed LR4.1 and have had no issues. I do think LR4.1's performance is better in the develop module. The thing is you can install either one and try it. It doesn't overwrite LR3.5. You can try LR4 and see if it works for you. If it doesn't continue to use LR3.5.