I have just been in contact with the Facebook page for A Place in the Sun.
The people who manage the page cannot yet say when the new series will be aired on Channel 4. What they did say is that filming has been underway since February this year. The filming of the episode for Almerimar took place in early June.
They also said that once the new season starts they will include a synopsis of each episode on the A Place in the Sun website.
I will provide another update here once the start date for the series has been announced.