With today's The War Within Beta build, Blizzard has raised the Concentration cap for Crafting professions from 500 to 1,000!
The War Within has taken the Inspiration mechanic from Dragonflight and replaced it with Concentration — a less random, more deterministic method of ensuring the highest quality crafted goods. However, with a cap of only 500, palyers would have to carefully calculate their Concentration uses, given that some crafts could cost nearly 150 concentration per use depending on skill level.