Just a simple question.... about last year blizzcon skins

Will it be obtainable the skins for sym and genji like the sombra skin from 2018 this year? Its a shame if it isnt…

it is not expected that the 2019 Blizzcon skins will NOT be available again. The case with Demon Hunter Sombra was because there was a specific BlizzCon blog post indicating another opportunity would become available. There is no such mention in any of 2019’s blog posts. Details in these forum threads:

NOTICE: This year's BlizzCon skins appear to be EXCLUSIVE to BlizzCon