The download page lists "Mac OSX, Linux x86", Linux x64, Windows x86, Windows x64". The average user does not know what x86 or x64 means, and if they assume that the larger number is the latest (because duh) then they'll be causing problems down the line by installing the 32bit version on their (probably 64bit) machines.

Traditionally, this is solved by autodetecting their OS and giving them a big link in giant UX-ey button form as "recommended", and only mentioning the other platform links in smaller letters below that.

So, I don't think it's quite ready for grandmas yet.