入籍的一个小问题,请教版上大侠们!

在HO给的PR的confirmation letter上写着:you need to tell us as soon as you can if – you change your nationality. If you change personal details listed above you will need to apply for a new card within three months. To do this you should complete and submit form BRP(RC)…If you do not, you may face a financial penalty of up to 1000 pounds or have your permission to stay revoked.
我是最近拿到的PR,以biometric card的形式发的。按照上面话里的意思,我如果申请入籍的话,是不是在入籍之后3个月内一定要填新表BRP(RC)? 有同样拿PR生物卡并且也考虑入籍的同胞么?是否这是新政策?

多谢!