The annual Serpentine Pavilion announcement is one of the most highly anticipated architecture events of the year and news has reached us that the Bjarke Ingels Group (BIG) is set to design the renowned London gallery's next instalment. But the ambitious art space has upped the ante this year, with additional new plans in the pipeline.

This summer, the architecture programme will also include a quartet of 25 sq m Summer Houses, designed by four different architects, called in by the gallery to create something inspired by the nearby Queen Caroline's Temple – a classical style summer house originally built in 1734. These will be designed by Kunlé Adeyemi - NLÉ (Amsterdam/Lagos); Barkow Leibinger (Berlin/New York); Yona Friedman (Paris); and Asif Khan (London).

The expanded scheme still needs to go through planning with application set to reach Westminster Council later this month; and should this be granted, in a few months Londoners and visitors alike will be able to get a multiplied firsthand experience of contemporary architecture, all from within the historic parkland of Kensington Gardens.

The BIG-designed pavilion will sit at the heart of the commission, allowing for a space where visitors can sit and relax, as well as providing 'a forum for learning, debate and entertainment at night,' explains the gallery. A café on site will be run in partnership with Harrods.

Following up on the pavilion's continued success since the program's inception in 2000 - and last year's brightly coloured design by Spanish architecture firm Selgascano - this year's architectural bonanza is set to open its doors on 10 June, running through to October 2016.