I just did the dosdude Catalina patch on my late 2011 13 inch MacBook Pro that has the 2.4 i5, 8g of ram and a 500g hd, it works awesome, and I have heard that a few people using the patch have gotten the Big Sur update notice, just did mine yesterday so haven't seen it yet, and not sure if I will, but wondering how long Catalina will be supported?