I think you're right OldHat. The trees do look improved. Nice bonus there. From the website - the following quote about 2.06 update.
"The update will also include a few small enhancements and new features, full details will be released later.
Some examples; improvements to excessive aircraft damage that could sometimes affect pilot health in outcomes. A 'very light' Regional Air Activity in Workshops settings to help those will lesser CPU/GPU power, and a Workshop setting to allow player to always have the closest target available allocated and more.
Also included are improved sky and horizon lighting at sunrise/sunset by AnKor! Other improvements such as a major rework of aircraft shine and reflectivity, and a blinding effect for sun glare -- beware of the Hun in the sun
and more. It will also include some minor aircraft fixes."
Can't wait for the full list to be released but so far it looks fantastic. Best supported WWI flight sim ever.