Thanks for the response Crusty and phil_m. That's fair enough re Line 6 sharing their plans... most companies are like that.

At least with brands like Apple they're pretty predictable when an updated product is going to be released, I was just wondering if people more famililar with Line 6 would be expecting anything new anytime soon in this stompox modeller category.

I've gone ahead and ordered an M13 anyway, it should arrive in a couple days - I'm looking forward to seeing what it's capable of.

I guess the unit itself is infinately upgradable with software updates - there's probably not much more which can be done with the hardware aspect anyway. Although I'm yet to use one I could imagine the knobs could be one area that could do with some refinement in their design though - I believe the current ones are end to end knobs and if you tweak one pedal and the go select another pedal in that 'column' then go to adjust a knob the parameter jumps to where the knob position currently is - losing the old setting in the process - has there been any fixes for this yet?

I would presume enless knobs would have been a better choice perhaps. Therefore it doesn't matter where the knob position is and when you go to make an adjustment it just increases/decreases from the current parameter insread of jumping to the previous settings. I've use various DAW control surfaces over the years and the ones with the end to end knobs were horrid, when you jumped from track to track you couldn't make fine adjustments as it make the parameter jump to where the knob was... unlike the units that had the 'digital endless knobs' that just edited from where it already was.  Do you guys find this much of an issue on these pedal boards?