With Apple rumored to working on sleeker versions of its 13- and 15-inch MacBook Pro models in time for a possible reveal at WWDC, designer Martin Hajek has provided one possible take on how the new machines might look. His mockups essentially scale up the 12-inch MacBook design, the above image contrasting with the existing design.

The renders also incorporate a rather lovely OS X concept created by Andrew Ambrosino, the UX designer behind the standalone Apple Music app concept we showed you last year. The same duo also teamed up for a beautiful Apple TV concept.

You can see more renders below …

One oddity is that the keyboard hasn’t been scaled-up, so it looks a little lost there in the wider expanse of the 15-inch casing. In reality, Apple would use almost certainly use larger keys with wider spacing between them to make for a better typing experience – though I’m not sure it would go so far as the edge-to-edge design used in the 12-inch MacBook and Magic Keyboard.

One key to the ultra-thin form factor of the 12-incher is the fanless design. This is probably not a realistic prospect for the higher-powered processors in the Pro models, so we’re not expecting to see anything quite this sleek, but the general design direction seems likely.

Hajek uses rose gold to illustrate the concept, but obviously all the usual MacBook colors would be available.

What do you think? Check out our gallery below, the full set of renders on Martin Hajek’s site and then take our poll. As ever, share your thoughts in the comments.