Apple’s MacBook Pro line may be about to get a refresh, according to recent reports. Rumors suggest that revamped 15-inch MacBook Pro will go into production in April, followed by the 13-inch model in June.

According to a report today from DigiTimes, Apple is planning to produce 100,000-150,000 units of the 15-inch Macbook Pro when mass production starts in April. The 13-inch model is expected to go into mass production in June. DigiTimes’s sources also say that Apple is placing considerably more orders for the 13-inch model. There is apparently no information about when a refreshed 17-inch MacBook will be going into production.

Apple’s lineup of MacBook Pro notebooks is coming due for significant update. There were two minor updates to the line last year, but there has not been a major refresh to the line since 2009 when the MacBook Pro got an aluminum unibody frame and the 13-inch model was added to the lineup. At the same time the 13-inch MacBook (not Pro) got a white plastic unibody frame as well, though that model was discontinued last year.