Download page for x64 version still offers only 1.99 version. Please update it.

I've checked and 2.11 is there for me. are you sure you aren't being cached? did you try refreshing your browser?

Here is direct link for you:

http://download2.tixati.com/download/tixati-2.11-1.win64-install.exe

For me I had a different issue.
The .deb (under ubuntu 14.04.2) is there and installation is ok .However, I can't run Tixati after upgrading to v2.11 x64. Simply downgrading to the v1.99 works for me.

I was able to download and install v2.11 x64 for windows and linux (.deb) on 17 April so have to believe your browser was using stale link data if it was giving you access to v1.99 after that date.

I agree with guest here. I tried to upgrade from 1.99 to 2.11, using the tixati_2.11-1_amd64.deb and it crashes so I had also to downgade back to 1.99. The installation works great but tixati crashes when I try to run it.

//Pekka