from the youtube uploader:
A wheeled, self-propelled 155 mm L52 automatic howitzer has been developed, based on the successful towed FH77 B.The new FH 77 BW L52 howitzer will have state-of-the-art tactical and technical performance

the Swedish Defence Materiel Administration page about it

Saw it in an episode of Futureweapons, Youtube link 1 & Youtube link 2 but the clip on youtube is divided into two and was not fully on the subject, too bad, it's better than this one.