Not really a 2010 film, instead it's a compilation/rework of the first 6 episodes of the original TV series (1979), which lists Takahata as series director. Just to say that you shouldn't expect a modern Ghibli-like Takahata, but an early 80s TV anime with strong Western influences, recut to resemble a feature film.
I'm not familiar with the original Montgomery novel, nor with the original anime adaptation, but I've seen plenty of similar series on Dutch TV when I was younger. The style is very typical, charming but rather basic, with a clear love for rural environments and traditional values.
The animation is basic, but there are some dream-like sequences that rise well above expected TV quality. Anne is also a fun character. Quite chatty and a little exhausting, but her inquisitive outlook on life is refreshing. The film is a too slow though, with hardly anything happening within these 100 minutes. It's not bad, but it's clear the pacing is better suited for a TV series than a feature film.