Catalunya will continue to use an F1-style layout for future MotoGP events.
MotoGP switched to the slower layout after the tragic death of Luis Salom, who fell and then followed his bike into the airfence at the penultimate corner during Friday practice for this year's Moto2 event.
The F1 layout uses a chicane as its penultimate turn, plus a slower corner at the end of the back straight, both due to run-off concerns.
MotoGP is to continue using the F1 sections, albeit with a modified chicane - the new motorcycle chicane being placed further away from the final corner.
The new layout will have a length of 4,652 metres. The necessary track work will be carried in January, in order to have everything ready for February.