Check "Get updates" via "Library" on Microsoft Store. Thats where it appeared for me.
Update just rolled out for me.
Instead of removing my comment maybe fix your system, a 48h timer is ridiculous. Also the fact that Java works flawlessly is hilarious.
See MCPE-180846
See MCPE-180846
Ive done what Herobrine said. But I just get "An Error occured" and no more info. Whats up with Mojang/microsoft? Modding on Java is smooth like butter. Why make a worse product than the original?