Now what happened in 2017 from may till now will not happen they have more ITA to be issued as they have leverage and they can send PR even if this year's quota is about to be completed overall things seem same as from 300 to 310 is not much however percentage for FSW FST AND CEC along with PNP have increase greatly this is definitely a good news
you can compare 2018-2020 targets
http://www.cic.gc.ca/english/department/media/notices/2017-11-01.asp
with 2017 targets
http://www.cic.gc.ca/english/department/media/notices/2016-10-31.asp
They are planning about a 3% increase for FSW and 7.8% increase for PNP for 2018 over 2017, and larger increases for 2019 over 2018. So yes, hopefully in 2018 they won't repeat this year's slowdown from May until now for next year when they will know there are higher targets ahead for the next year.
Immigration category 2017 2018 2019 2020
Economic Federal High Skilled 73,700 74,900 81,400 85,800
Atlantic Immigration Pilot Program 1,000 2,000 4,000
Caregivers 18,000 17,000 14,000 5,000
Federal Business 500 700 700 700
Provincial Nominee Program 51,000 55,000 61,000 67,800
Quebec Skilled Workers and Business 29,300 28,900 32,500 32,500
Total Economic 172,500 177,500 191,600 195,800