Finaly after 2 months opencart 1.5.4 is released with some important new features.
View Customers Online
Searchable fields like isbn, upc, eam, etc..
Updated the doctype to html5
Update Authorize.net (AIM) for Shipping information
Added salt columns for better security
Using mCrypt for better encryption security (now requires PHP mcrypt extension).
better image re-sizing. if an images is the correct size it won;t be re-sized.
Show stock warning only if enabled for individuals products.
Sending mail to customers fails when SSL enabled
Delete address from address book fix
customer_blacklist IPv6 fix
Use default PNG compression level of 6