Youtube has come with 5 major changes in its channel monetization policies. Criteria of 4000 hr and 1000 Subscribers is still the same. However, the review team will audit your channel on 5 basis. These are:
1. Main Theme/ Niche
2. The Most Viewed Videos
3. Latest Videos in last 1 month
4. Source (Biggest Proportion of Watch Time)
5. Video Meta data
To know about these points in detail, please go through the video. These points are explained by SEO Strategist Sumit Sharma.
For detail study & to take printout, you may go through the link:
https://support.google.com/youtube/answer/1311392?hl=en
