I see A/P/SL already got updated serveral days ago, but why does DL deserve no update except two new weapons?

I remember the last lvl cap rising was in August so I guess one big update every four months but now I even don't see a XMAS event.

Right now the Dev must be enjoying their holiday and DL won't update in a short time for sure.

Anybody tell me why Dev don't update DL and when will they do so?

I suppose the worst thing is that STS is gonna stop DL server.