Welcome to the HSBBW and congratulations! IMO this is the school acknowledging receipt of your online questionnaire. This is normal. The fact that the coach has also provided his phone number is a positive sign. Call Soon! As an '08 the coach cannot call but can talk with you if you initiate the contact. Take this opportunity to introduce yourself.
This is a good reminder for players to also take advantage of the online profiles provided on many college baseball websites.