Hi Marek,

Please take a look at the comments of the following blog: http://www.salesforceben.com/new-salesforce-certifications-for-2015/

Wayne McCulloch has provided the following information:

Hi Stephanie,
Firstly, thank you for your recent purchase of our new Architect Academy bundle. It is the first time Salesforce has put together a real learning path for the required architect skills needed in the market. Also, please allow me to address your feedback which hopefully helps you understand where we are with the Architect Academy program.
What you have purchased currently has all the curated learning materials that exists as it pertains to each of our 9 Domain Specialist roles at Salesforce. That means, people no longer need to search and “guess” what content is valuable and what is not relevant to building your skills. This content has been vetted and approved by our very own Program Architects at well as ratified by an Architect board consisting of Partners and Customers. That’s what you have today – Learn Materials (and they will be modified and new content created from feedback from people like yourself).
In December timeframe (subject to change), you will receive the next set of materials which are what we call Build Materials. These will be designated Salesforce orgs that will allow you to put your Learn Materials into practice. Designed with our Program Architects, this will allow you to get hands on skills relating to these 9 Specialist skills.
These two sets of materials (Learn and Build) represent approximately 18-27 days of learning materials (based on your background and experience).
Early next year, you will receive more materials consisting of Certification prep training, practice exams (yes, we are building practice exams for the first time) as well as a testing capability built in to your existing digital books. These materials are designed to get you ready to get your certification.
Finally, when we have built them, you will be receiving 9 exam vouchers (potentially worth more than what you paid for the entire bundle) allowing you to build your personal Architect Certifications over time. And because you made your purchase before all these other assets are in place, you get all these additional benefits included with your current purchase. In the future when all these additional materials are included, the pricing will then reflect the content value provided (which will be more than our current price today).
So thank you for purchasing the bundle at launch and I look forward to hearing from you regarding the upcoming additions to your bundle purchase.
Wayne McCulloch – SVP, Salesforce University

I hope this will give you some more information. Please read also the other comments, it's useful information.

Good luck!

Best regards,
Martijn Schwärzer