I recommend you don't install the latest wesnoth yet, since there are no improvements other than the optification. Also note that while it's now optified the libraries it uses still take up quite a lot of rootsh space, so the difference is not that great. (around 4Mb I think)

I havent been able to upload the data package yet due to some ssl issues and the size of the bloody thing, so the new version will not work right away.

I'll try to fix it asap.