I am fearful, to be honest! It's a huge change. Every child has learnt connectives, now conjunctions. They're used to stand alone grammar questions, now they answer them embedded in a text. Fronted adverbials anyone?
About 70% of the questions are based on new names, new technical language and new phrases and entirely new input! It's truly amazing that the powers that be think this is ok! It will mean a sea change in the way grammar is taught, and it will need to be embedded from Reception onwards. The KS1 grammar is equally demanding.
I think for this Year 5, full on parrat training to the question types is going to be the only way they will stand a chance, and that's not fair. It isn't truly training them about grammar either, merely getting them to recite rules rather than use them.