Well... it seems in the end, there is really a new beam part being introduced in 2009.
As suspected before, but on the wrong set a the time... there is a new 'T' shaped 3x3 beam.
There will be several of them (6 at least - 4 on back and 2 in front) within the new PF Dumper Truck (8264) and also some at the Monster Truck (8261), both to be released next January. So apart from new large yellow TECHNIC panels, these models have more surprises for us.
The new models, have them in black, but hopefully we will see later them in other colors as well.
Below, I cand find these new parts applied to the upcoming TECHNIC sets.
... yes I know, the photos are not so good.