The FIA has now approved plans to give every driver that makes it through to Q3 an extra set of Pirelli's option tyre, which must be returned to the tyre supplier after the session.
Additionally, Q1 has been shortened by two minutes (from 20 to 18) and Q3 extended by two minutes (from 10 to 12) to allow drivers to complete an extra run in the final session.
All drivers that make it through to Q3 will now start the races on the set of tyres they use to set their best time in Q2. Previously, every driver that made it to Q3 had to start the race on the tyres they used in that session.
F1 teams hope these rule changes will remove any strategic advantage to skipping the final segment of qualifying and thus improve the Saturday show for fans.