Genereally, latest version of Byteball software is 1.9.0. There is no difference between the respective operating system because Byteball uses NodeJS which is platform independent. If you do not use the latest version then you get a message when you open the client which urges you to update to the new version. So if you open the client and there is not such a message then you're use the latest version.

The snapshot for today's distribution should be conducted. Can somebody confirm this please? Thanks.