Via (in French)
Note 9 deal can wait, christmas deals, Black Friday 23 Nov; plus Mi Mix 3 coming (Smiley devil)
The Note 8 will get another major update, it'll get Android 9.0 Pie in April after the S9 & Note 9. No it doesn't lag, read the review or go on the Note 8 users page.
just reminder - you wont get any proper update and off course note 8 lags