According to Robert Llewellyn on his twitter feed
I'm not going to kid myself and say I won't watch because of course I will, but I'm not going to get my hopes up after Back To Earth.
And from various other sourcesSeries 10 of Red Dwarf announcement just been made at DJ 09. To clarify the scripts have been commissioned, wont be filming til 2010
Dimension Jump attendees have just been the first to be informed - by Doug Naylor, via email passed on by Andrew Ellard - that Dave have commissioned six new episodes of Red Dwarf for broadcast in late 2010.
Also, it’s been hinted that (a) there may actually end up being more than six, depending on budget; and (b) it’ll probably have a studio audience.
I'm not going to kid myself and say I won't watch because of course I will, but I'm not going to get my hopes up after Back To Earth.