Given that Yamaha has some excellent modelling technologies of its own I am not so sure, heck I even prefer the Behringer pods over the L6 pods sound wise, I think it is more of a financial/production move, L6 has been in the doldrums financially and the build quality of their products has been complained about a lot recently. Yamaha is getting a brand well known in the English speaking guitar playing world, which is a sector that Yamaha has been under performing in since the 70’s, with the exception of steel string acoustic and classical guitars. Given the financial performance of L6 recently, Yamaha has probably not paid too much for the company either.
More recently one of the reasons for the bad performance of L6 has been the surprise sales hit of the Yamaha H series of modelling amps that competed directly with both processors and amps from L6. The companies tie up with a low budget provider of Chinese “pro” audio products was also not a good idea in the first place.
Much like when Yamaha took over Steinberg after Pinnacle had diluted the brand by releasing hopeless consumer products that were not even sold via the Steinberg channels, I hope this will lead to a refocused Line6 and fans of the brand should take heart in fact that the company has stated they will keep it as a separate entity with the current staff, when Yamaha took over Korg and Steinberg they left the companies operation independent and focused on rebuilding them rather than gut them for brands and technologies.