John Sickels has a Blue Jays Prospect Discussion Thread up, and will post the Jays Top 20 in the next week.
milb.com has been doing their Top 50 this week, and the top 10 is set to come out tomorrow. By process of elimination, it should look something like (this is my guess of what it will look like, not what my top 10 would look like, not that I know enough about prospect evaluation to come up with a legitimate list)...
...10. Josh Vitters, 3B, Cubs
9. Rick Porcello, SP, Tigers
8. Colby Rasmus, CF, Cardinals
7. Pedro Alvarez, 3B, Pirates
6. Jason Heyward, OF, Braves
5. Travis Snider, OF, Jays
4. Cameron Maybin, CF, Marlins
3. Neftali Feliz, SP, Rangers
2. Matt Wieters, C, Orioles
1. David Price, SP, Rays
No other Jays made the top 50, which has been the trend in recent years, though I thought there was a pretty good chance this year between Cecil and Arencibia.
Baseball Prospectus' Kevin Goldstein has also been doing his top 11 lists, though no word on when the Toronto list will make its appearance. Baseball America released their Jays Top 10 a while ago.
https://www.battersbox.ca/article.php?story=20081204204031369