The aim of presented paper is to outline the concept of the issuing of the seventh volume of the source edition "Codex diplomaticus et epistolaris regni Bohemiae" and its digital version. As a reaction to the changes in the diplomatic material at the end of the 13th century (in connection with the changes of stylization e.g. because of the permeation of the principles of Canon and Roman law into the charters or an influence of professional notaries educated in the domestic notary school in Vyšehrad, or with regard to the emergence of the official books, especially formularies), the editors decided to change a concept of issuing of CDB. In the first phase there will be processed and finished the second part of "Katalog listin a listů k VII. dílu Českého diplomatáře" and its on-line publishing in a form of database on website. The second phase will be connected with the preparation of the critical edition in a traditional printed as well as a digital form.