Tayto Park's website has been updated with the 2018 park map and seemingly there won't be any new additions this year. (Saving up for that 17.5 million euro coaster next year I imagine!)
http://www.taytopark.ie/uploads/inner_page/DL_Map_2018_Web.pdf
Although the park has recently applied for planning permission for a new storage shed, incorporating a small personnel office and toilets, next to the car park. On 6/02/18 Meath County Council decided to grant permission. Provided there is no appeal against this decision a grant of planning permission will be issued at the end of four weeks. To make way for this an existing hay shed and stable will be demolished. These plans are also superseding a previously granted planning application for an Aviary on that site.
http://www.eplanning.ie/MeathCC/AppFileRefDetails/AA171418/0
Map of Tayto Park. The storage shed will go on the green strip of land coming off the car park. (the brown building is the hay shed that will be demolished)
I assume this permanent warehouse will serve as the replacement for the temporary storage shed next to the Viking Voyage (the planning permission for the flume lists it as temporary for the duration of construction). This would free up all of the land between Viking Voyage and Cú Chulainn so the park can extend out that way (presumably the 2019 will go somewhere around here).
With regards to the hotel they applied for last year Meath County Council will be making the decision whether to grant planning permission on 17/04/2018.
Location of the hotel in relation to the park. If permission is granted it is planned to begin construction in 2019 and open the hotel in 2021. (if the park stick to their two year investment cycle that means it will open the same year as another new major ride)
http://www.eplanning.ie/MeathCC/AppFileRefDetails/AA170579/0
I really like Tayto Park and it seems to have a very bright future. Excited for what they add next. Hopefully the level of theming seen on Viking Voyage will continue.