can someone tell me. Are these rforks the travel adjustable version?

http://www.chainreactioncycles.com/Models.aspx?ModelID=54604

Rock Shox Revelation RLT Dual Air Ti Forks 2011

No you need the dual POSITION airs if you want to adjust the travel.
These
On one have got them cheap but only in QR.

As above

Aren’t they internally adjustable via adding/removing spacers in the air spring like old Revs then?

Asking cos I was looking at a pair of these for myself, but would want to run them at 130mm on the current frame.

AFAIK they’re still all-travel, so adjustable with spacers. For external on-the-fly you need dual position or u-turn.

Aren’t they internally adjustable via adding/removing spacers in the air spring like old Revs then?

It seems they are, I’ve just seen it on the Jenson website – internal spacers give 130,140 or 150mm

I consider ‘adjustable forks’ to just be a switch or U turn type control.

You can adjust travel on all of them