No, subscribers only have presale access for the products related to the genre of book they subscribe to. If you are an Afterlight subscriber, this only grants you access to Afterlight presales. If you are an Evernight subscriber, you will get access to Evernight presales.
If the book is part of a series and you have purchased the previous book through us, then you should get access to the presale for the rest of the series. Please check the product announcement in our News section for more information.