Are there any standard for weekly digital magazines? That understand meta data of a magazine? Eg. issue number, date, author, editorial columns, series etc., so that content is searchable and presentable in a better intuitive GUI?
First of all, you need to clarify your question. The first part seems to refer to a file format for digital magazines, the second part to a file format for the metadata associated with a digital publication.
With respect to the metadata: there are several standards used in the industry. For examples:
With respect to the file format for the publication itself, some formats that might be suitable for digital magazines: