KEF LS50 - new model?

The KEF LS50 was/is a 50th Anniversary edition model.  These are usually made for a few years, (depending on how well they sell), then discontinued.  Normally Anniversary models are not updated.

You might have to wait for the LS60...

The KEF LS50 is not that great. A/B it with the JBL LSR305/8 and you'll see.

I person against the LS50's and a few thousand for them. Given the right application, small room without heavy bass requirements, the LS50 are incredibly good for $1500. Many people do not need any better. 

I would like a slightly bigger modle. With a 6.5" driver for deaper bass

What you want is the Kef R300!