Today the .dev top level domain name rolled out for preorder. Prices start from $11k for the first year from $15 per year from the second year and on.

Apple.dev, app(s).dev, software.dev - already taken 🙂

Prices are pre-sale, the general sale should start in a week with much more modest prices.

-- Added:
software.dev looks like is now by Atlassian
app.dev and apps.dev redirects to Virgin Media
apple.dev (via icann's lookup) mentions Apple as registrant. So no cybersquatters at this time 🙂