As 4.x pro perpetual license holder am I obliged to buy 5.x pro license or deactivate my 4.x pro license to use Unity 5 personal? I don't make anywhere near $100,000 per year ( got myself unity pro two years ago because I could not because I had to ) I understand as previously with Unity 4.x you can't use a pro and free license simultaneously, does this apply for 4.x and 5.x together? Or do the terms apply to their respective versions? I definitely would like to start playing around with unity 5 to see what it's like.. but there's no way I can afford pro right now and I'm wondering if I'm pretty much stuck choosing between which versions.. or if I'm pretty screwed and either forced to buy pro again just because I bought previous pro ? I have been reading the new license terms and faq and it's not very clear to me for different versions, any help would be appreciated.