I have no idea what is coming or when - but I am pretty sure from my limited past experience here that there will be "new" clubs, but nothing with any set of attributes that have not been provided before.
I noticed the "new" clubs I looked at in the last round were just a slightly different name or look, compared to the clubs they replaced, some with a bump in price. There still seems to be a hole or two in the lineup where some previous clubs that were removed have not actually been replaced with like clubs (e.g., Sabretooth putters).
Who knows?